Originally tomb 16 consisted of a burial chamber
only, which was facing the Via Severiana.
The tomb is located a little bit away from that street. Also on
the left side the tomb
was detached and there was an alley between tomb 15 and 16.
In later time (Constantine) a courtyard was built enclosing the
between tomb 16 and the Via Severiana as well as the already mentioned
The entrance of the enclosure was removed to the north side instead
to the main street. A part of the enclosure had a roof which was
by brick columns. One of the columns still remains in the middle
to continue tomb 16)